Detailed Kinematic Study of the Ionized and Neutral Gas in the Complex of Star Formation in the Galaxy IC 1613

Abstract

We carried out detailed kinematic studies of the complex of multiple HI and HII shells that represent the only region of ongoing star formation in the dwarf irregular galaxy IC 1613. We investigated the ionized-gas kinematics by using Fabry--Perot H-alpha observations with the 6-m Special Astrophysical Observatory telescope and the neutral-gas kinematics by using VLA 21-cm radio observations. We identified three extended (300-350 pc) neutral shells with which the brightest HII shells in the complex of star formation are associated. The neutral-gas kinematics in the complex has been studied for the first time and the H~I shells were found to expand at a velocity of 15--18 km/s. We constructed velocity ellipses for all HII shells in the complex and refined (increased) the expansion velocities of most of them. The nature of the interacting ionized and neutral shells is discussed.

arXiv comment14 pages, 9 EPS-figures

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• The HI Environment of Three Superbubbles in the Large Magellanic Cloud
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Cited by in corpus (19)

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• Quantifying the energy balance between the turbulent ionised gas and young stars
• The catalogue of OB associations in IC 1613
• Scanning Fabry--Perot Interferometer of the 6-m SAO RAS Telescope
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• Measurements of the Expansion Velocities of Ionized-Gas Superbubbles in Nearby Galaxies Based on Integral Field Spectroscopy Data
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• From gas to stars: MUSEings on the internal evolution of IC 1613
• Internal Kinematics of Galaxies: 3D Spectroscopy on Russian 6m Telescope